Ferrite magnet and method of producing same

Details Ferrite magnet and method of producing same Ferrite magnet and method of producing same

1981-12-29

1984-07-03

Parrish, John

Compositions

Magnetic

Iron-oxygen compound containing

264 24, 264 63, 264176R, B06B 102

Patent

active

044578512

ABSTRACT:
A ferrite magnet and a method of producing same, wherein a mixture of magnetoplumbite type ferrite particles contained as its principal constituent and at least one of a mixing medium, an organic binder and a minute particular additive which is added with water or methyl alcohol is subjected to extrusion compacting to form compacts. The formed compacts are each subjected to at least drying, sintering, orienting and magnetizing, to produce cylindrical ferrite magnets having a plurality of magnetic poles on the surface. To impart anisotropy to the magnets, at least one pulse magnetic field may be applied on the surface of each compact formed by extrusion compacting, and the oriented compact may be magnetized in the same direction as the direction in which the anisotropy has been imparted.

REFERENCES:
patent: 3114715 (1963-12-01), Brockman
patent: 4057606 (1977-11-01), Kobayashi

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